视网膜中央静脉阻塞倍频激光疗效观察

目的：观察倍频激光治疗视网膜中央静脉阻塞的疗效。方法：应用倍频激光治疗视网膜阻塞12例，治疗前后均行荧光素眼底血管造影（FFA）检查，并对照观察。结果：视网膜中央静脉阻塞12例（13眼），4只眼行广泛视网膜光凝术，9只眼行区域性视网膜光凝术，治疗次数最少1次，最多3次，2例复查后行补充光凝。治疗后荧光素造影对照观察结果：9眼区域性光凝术后，荧光素造影见藻注区光凝斑规则，色素上皮轻度萎缩，无灌注区边缘未见荧光素渗漏。广泛视网膜光凝4眼，2眼后极部新生血管萎缩，无荧光素渗漏，组织水肿消退，黄斑囊样水肿减轻；2眼新生血管缩小，尚有少许渗漏，后经补充光凝。无一例新生血管增多，无灌注区扩大或渗漏加重。结论：激光治疗虽不能明确提高中心视力，但能促进水肿、出血、渗出的吸收，阻止病变的进一步发展，防止增殖性玻璃体视网膜病变和新生血管性青光眼的发生，保护当前的有效视力。

Central retinal vein occlusion treated with doubling frequency laser

Objectives:To observe the efficacy of doubling frequency laser for central retinal vein occlusion. Methods:Twelve cases(13 eyes) of central retinal vein occlusion were treated with doubling frequency laser,4 eyes underwent panretinal photocoagulation, 9 eyes underwent regional retinal photocoagulation. The treatment varied from 1~3 times. Two cases received supplemental photocoagulation after reexamination. Fundus fluorescein angiography was performed in all the cases before and after the treatment and the results were compared. Results:Laser spots were regular in perfusion area, pigment epithelium atrophy was mild and no fluorescein leakage was found at the border of nonperfusion area in the 9 eyes receiving regional photocoagulation treatment. Among the 4 eyes treated with panretinal photocoagulation, 2 eyes revealed neovascular atrophy at the posterior pole area; no fluorescein leakage was found and cystoid macular edema subsided. Another 2 eyes revealed neovascular regression and a little fluorescein leakage which needed supplemental photocoagulation. No neovascular increasing, perfusion area expanding or fluorescein leakage worsening were seen. Conclusions:Laser therapy does not increase the central visual acuity but it dose help the absorption of retinal edema, hemorrhage and exudation, prevent the occurrence of proliferative vitreoretinopathy or neovascular glucoma and is protective to the present visual acuity.